JPS62277831A - Transmission system for synchronizing data of data transmission line - Google Patents

Abstract

PURPOSE:To simplify transmission control and reception control section without requiring the procedure for transmission after a transmission permission is obtained by sending a control code of one unit and sending an information packet after a prescribed time elapses from the end of transmission. CONSTITUTION:In transmitting a data between information processing units, when a transmission control section 4 of a transmission equipment 1 at one side transmits an information packet 7 comprising plural unit codes, a control code 6 comprising one unit code commanding the reception preparation of the information packet 7 to a reception control section 5 of a reception equipment 2 at the other information processing unit is sent trough a transmission line 3. Further, the information packet 7 is sent after a predetermined time for the reception equipment 2 to complete the reception preparation, that is, after a transmission waiting time 8 elapses. Thus, the reception equipment 2 attains the reception preparation of the information packet 7 of high speed/ plural unit codes after the reception of the control code 6, to simplify the transmission control and reception control section.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an asynchronous data transmission system for a data transmission line in which asynchronous data transmission errors in the data transmission line are transmitted in packet units and information is exchanged.

[Conventional technology]

Conventionally, when transmitting data between information processing devices over a data transmission line, only an information packet consisting of one unit code or a plurality of units was transmitted individually. Therefore, this receiving device is required to always prepare for reception in advance, or to have high-speed responsiveness so that it can immediately prepare to receive multiple unit codes upon receiving the unit code at the head of the packet. After receiving an inquiry from the transmitting device for permission to transmit an information packet of multiple unit codes, and granting permission, the information packet can be received, and the transmission control of the transmitting device and receiving device is controlled. It was getting complicated.

[Problems to be Solved by the Invention] In the asynchronous data transmission method of the conventional data transmission line described above, when transmitting information packets of multiple unit codes from a transmitting device at high speed, the receiving device cannot always receive data. You can perform preparations, check the reception rate @ of multiple unit codes when receiving the unit code at the beginning of the packet to request high-speed response, or send permission to send to the receiving device using the sending device #. receive information packets,
There is a drawback when transmission control of the transmitting device and the receiving device becomes complicated.

[Means for Solving the Problems] The asynchronous data transmission line of the data transmission line of the present invention is a data transmission line that performs data transmission between the transmitter/manufacturer and the receiving device via a data transmission circuit. In the asynchronous data transmission system of 2008, the present invention is configured to include sending (B unit [IK is information of multiple unit codes at any given time), sending a kerat I-, and transmitting a kerat.

〔Example〕

The present invention will be explained with reference to all the drawings.

Figure 1 shows the configuration of an embodiment of the present invention. FIG. 2 is a block diagram showing one 91i of the data signal of the present invention.

As shown in FIGS. 1 and 2, all data transmission between information processing devices is carried out in nine places.
? When transmitting, first, a control code 6 consisting of a one-unit code that instructs the reception control unit 5 of the reception device 2 in the other -1 information processing device to prepare for reception of the information packet 7 is transmitted to the transmission line 3. Furthermore, the receiving device 2 completes reception preparations.The information packet 7 is then transmitted after a predetermined time, that is, after the transmission waiting time 8 has elapsed.

Upon receiving the control code 6 instructing preparation for reception of the information packet 7, the reception control unit 5 of the reception device 2 prepares to receive the information packet 7 of high-speed multiple unit codes. Further, after receiving the control code 6, the reception control unit 5 receives the information packet 7 at high speed and completes the transmission of the information packet 7 when a predetermined transmission waiting time 8 has elapsed.

Therefore, when transmitting information packets 7 with multiple position codes during high-speed, large-volume data transmission between information processing devices, the transmitting device 1 first transmits the control code 6 that instructs the receiving device 2 to prepare to receive the information packets 7. However, by transmitting the information packet 7 after a certain period of time, the receiving device 2 becomes ready to receive the information packet 7 of the high speed/multiple unit code after receiving the control code 6.

〔Effect of the invention〕

As explained above, in the present invention, when transmitting an information packet of characteristic unit code from the transmitting device during high-speed and large-volume data transmission between information processing devices, a control code is sent to the receiving device in advance, and the information packet is sent to the receiving device. After preparing to receive the information, <Kerat? By transmitting this control code, the receiving device can prepare to receive the high-speed/order unit code information (kerato) after receiving this control code. There is no need to obtain transmission permission between devices before transmitting information (information), and the transmission control and reception control sections are simplified, reducing the load on the transmitting device and receiving device, and increasing the efficiency. This has the effect of easily transmitting a large amount of data at high speed.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, and FIG. 2 is a configuration diagram showing an example of a data signal of the present invention. 1... Transmitting device, 2... Receiving device, 3
...Transmission line, 4...Transmission control section, 5
...Reception control section. /-N

Claims (1)

[Claims] In an asynchronous data transmission method for a data transmission line in which data is transmitted between a transmitting device and a receiving device via a data transmission line, when the transmitting device transmits an information packet of multiple unit codes at any time, it first transmits one unit code. An asynchronous data transmission system for a data transmission line, characterized in that a control code of a code is transmitted, and the information packet is transmitted after a predetermined time has elapsed from the time the transmission is completed.